Hey all ... I am doing a business case for training of Microsoft products and I am looking for some general stats about users of all applications. What I am looking for exactly, would be numbers telling me how much the average user knows about the applications they use. i.e. The average Excel user only uses/knows about 20% of the application.

I have heard stats of this nature bantered around many times in the past, but I have yet to see anything tangible. Does anyone know of something that exists on this? Any info would be greatly appreciated!